Principal Component Analysis (PCA) Combined with Naturally Occurring Crystallization Inhibitors: An Integrated Strategy for a more Sustainable Control of Salt Decay in Built Heritage

Salt inhibitors have been receiving increasing attention as potential innovative systems to counteract salt damage by preventing crystallisation of the salts within natural stone structure—and related disruptive action—of built heritage. Especially, we focus on biomass-derived inhibitor featuring complete solubility in water or alcohol and intrinsic non-toxicity. Moving from promising results obtained, present study aims develop research concerning possibility rationalizing collected data sets making them amenable statistical analysis. This paper reports an exploratory application one most powerful methods chemometrics, i.e., principal component analysis (PCA), this area. It will be seen that method is a tool extract information series tests optimize reduce level “noise” collected, unnecessary experimental errors, suggest new directions.